Water walls



A. G. WALLS.

SPINNING, TWISTING, WINDING, AND LIKE MACHINE.

APPLICATION FILED JAN-10.1914.

1 1 9 3,32 l Patented Aug. 1, 1916.

ALEXANDER GROUNDWATER WALLS, OF PAISLEY, SCOTLAND.

SPINNING, TWISTING, WINDING, AND LIKE MACHINE.

Specification of Letters Patent.

Patented Aug. 1, 1916.

Application filed January 10, 1914. Serial No. 811,361.

To all whom it may concern Be it known that I, ALEXANDER GROUND- WATER VVALLS, a subject of the King of the United Kingdom of Great Britain and Ireland, and residing at Paisley, Renfrewshire, Scotland, have invented a certain new and useful Improvement in Spinning, Twisting, Winding, and like Machines, of which the following is a specification.

This invention relates to tension devices for applying frictional drag to bobbins or spindles in spinning, twisting, Winding and like machines for the purpose of maintaining tension on the yarn, c. 9., during the operation of winding or unwinding, and has for its object to provide a finer adjustment of the drag than was heretofore possible and ready response to inequalities or to wear of the frictional surfaces without apprcciably affecting the tension on the yarn.

In the accompanying drawing which illustrates the invention Figure 1 is a vertical section of the spring member of the dragapplying device; Fig. 2 is a vertical section of the creel-peg for a winding-elf bobbin with all of the members of the tension device in position. Fig. 3 is a plan view of the parts shown in Fig. 1. F ig. 4 is a plan of the base of the creel-peg showing the holding and locking arrangements.

Referring to the drawing, 1 is a thin annulus bearing on one side a plurality of flat springs 2, fastened to the annulus at 3, but otherwise free throughout their length, and having holes 4 by which they are located on a rotatable member hereinafter referred to. ()n the other side of the said annulus 1 is mounted an annular piece of felt 5 or like frictional material.

The fixed portion (3 of the creel-peg, hereinafter termed the spindle, is fixed to the creel stand in the usual way by means of a nut and washer. The base 7 of the spindle is recessed to receive a boss of the adjustable member 8 and a retaining spring 9 for holding said member 8 in any position to which it may be set. The retaining spring 9 does not act in a number of notches, but bears against a smooth surface, and thus is capable of retaining the member 8 in an infinite number of different positions. The screw 10 by pressing the retaining spring 9 against the bossof the member 8 serves as a locking device to prevent accidental readjustment. The member 8 is screw-threaded internally to fit a correspondingly threaded part on the.

spindle 6, thus providing for adjustment in an axial direction.

The rotating member 11, hereinafter termed the sleeve, is mounted between the shoulder 12 of the spindle 6 and a nut 13 locked against a shoulder 14 of the spindle, thus permitting of free rotation while remaining practically free from liability to shake in an axial direction. The bore of the sleeve is of considerably larger diameter than the spindle but at each end is bushed with hard fiber or other suitable material to form a good fit on the spindle.

The sleeve 11 is formed at its bottom end with a flange 15 presenting a recess 16 to re ceive the spring member which is mounted in the recess coaxially with the spindle by screws 17 which pass through the holes 1 in the free ends of the springs 2. The screws 17 are slightly smaller in diameter than the holes at to allow such slight movement as may be necessary to prevent the spring memher from buckling as the springs are compressed.

The central orifice of the annulus 1 is so much larger in diameter than the portion of the spindle which it surrounds that the spring member and spindle can never come into contact Similarly, the outer diameter of the spring member is considerably smaller than that of the wall of the recess 16, so that there is no frictional contact which would affect axial movement.

In operation the member 8 is screwed toward the sleeve till its polished face encounters the frictional surface 5 when a very slight drag will be obtained. Continued adjustment toward the sleeve will gradually increase the drag until a satisfactory tension is obtained on the yarn; then the adjustable member 8 may be securely locked by the screw 10. The spring member held by the points of its springs may thus be considered to be floating and is free to respond in an axial direction either to minute inequalities in the friction surface against which it acts or to slight wear of the friction surfaces without appreciably afiecting the tension on the yarn. At the same time the resiliency of the spring member provides for much finer adjustment than has hitherto been possible.

I claim A tension device comprising in combination with two members rotatable relatively to one another, a spring member for applying frictional drag in opposition to such relative rotation, said spring member provided with spring elements each apertured at its free end, said'spring elements projecting from the plane of one face of said annulus, said annulus provided on the opposite face With a body of frictional material, and retaining elements of less diameter than the apertures in said spring elements for securing said spring elements to one of said relatively '10 rotatable members.

In testimony whereof I have signed my name to this specification in the presence of tWo subscribing Witnesses.

ALEXANDER GROUNDWATER WALLS.

Witnesses: r

HAROLD G. C. FAIRWEATHER, J OHNFAULL STEVENSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

